As promised last month, Amazon is adding new games that Prime members can play for free on its Luna cloud gaming service during the month of April. Starting tomorrow, Prime members will be able to play the games Mortal Shell: Enhanced Edition and Amnesia: Rebirth for free, which normally require a subscrition to the Luna+ Channel. Also playable for free are the games King of Fighters ’98, which is part of the Retro Channel, and Tracks, which is part of the Family Channel. All four games can be played without any subscription fees during April, as long as you are a Prime member. For those of you who do have a subsctiption to the Luna+ Channel, the games Lost Judgment, Okami HD, and Sonic Colors are being added some time in April.